对BOC调制的GPS信号干扰研究

发布时间：2018-04-05 11:52

本文选题：GPS干扰　切入点：BOC调制　出处：《西安电子科技大学》2013年硕士论文

【摘要】：GPS是一种可以定时和测距的空间交会定点导航系统,可以向全球用户提供连续、实时、高精度的三维位置、速度和时间信息。随着GPS在外军装备中的广泛应用,对GPS干扰的研究也具有越来越重要的意义。本文分析了GPS信号的特点,研究了GPS信号的调制方式,特别是BOC调制的特点,建立了GPS信号仿真模型,证明了采用BOC调制的GPS信号与采用BPSK调制的信号相比,具有较强的抗多路径效应能力和良好的跟踪性能,以及抗干扰性能。论文建立了欺骗和压制两种干扰模型,研究了单音干扰、多音干扰、噪声调频、噪声调幅等多种压制干扰技术,以及转发干扰等欺骗干扰技术,并对各种干扰技术进行了建模和仿真,得到了时域、频域干扰曲线,以及信干比与误码率的关系曲线,从而实现了干扰性能的评估。
[Abstract]:GPS is a kind of space rendezvous fixed-point navigation system which can timing and ranging. It can provide global users with continuous, real-time, high-precision three-dimensional position, speed and time information.With the wide application of GPS in foreign military equipment, the study of GPS interference is becoming more and more important.This paper analyzes the characteristics of GPS signal, studies the modulation mode of GPS signal, especially the characteristic of BOC modulation, establishes the simulation model of GPS signal, and proves that the GPS signal modulated by BOC is compared with the signal modulated by BPSK.It has strong ability to resist multipath effect, good tracking performance, and anti-interference performance.In this paper, two kinds of jamming models are established, such as single tone jamming, multi-tone jamming, noise frequency modulation, noise amplitude modulation, and deception jamming technology such as forward jamming.The interference curves in time domain and frequency domain, as well as the relationship between signal-to-interference ratio and bit error rate, are obtained by modeling and simulation of various jamming techniques, so that the jamming performance can be evaluated.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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